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Electrocatalytic Synthesis of Hydrogen Peroxide over Au/TiO 2 and Electrochemical Trace of OOH* Intermediate
Author(s) -
Sun Zhipeng,
Sheng Lei,
Gong Hao,
Song Li,
Jiang Xiaolong,
Wang Shengyao,
Meng Xianguang,
Wang Tao,
He Jianping
Publication year - 2020
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202001089
Subject(s) - hydrogen peroxide , catalysis , dielectric spectroscopy , electrochemistry , electron paramagnetic resonance , inorganic chemistry , selectivity , chemistry , materials science , hydrogen , electron transfer , decomposition , oxide , electrode , photochemistry , organic chemistry , nuclear magnetic resonance , physics
In this work, a series of gold‐supported titanium oxide composites have been prepared and high selectivity (over 90%) of hydrogen peroxide is achieved. For the first time, electrochemical impedance spectroscopy and electron spin resonance analysis demonstrate that high charge transfer impedance of the catalyst can suppress the decomposition of OOH* intermediates thus promoting the two‐electron process of the oxygen reduction reaction.